Ribbed knitted fabric.



E. W. SCOTT. RIBBED KNITTED FABRIC. 7 APPLICATION FILED NOV. 10/1908v Patented July 13, 1909.

3 SHEETS-SHEET 2 an exaggerated View of a piece oi ribbed cinrno snares nisnr (WEDGE,

ROBERT W. SCOTT, OF LEEDS POlNT NEW JERSEY, ASSIGNOR TO GENERAL KNIT FABRIC COMPANY, OF UTIGA, NEW YORK, A CORPORATION OF NEW YORK.

EMBED KNIlIT'IEED FABRIC.

Specification of. Letters Patent.

Patented July 13, 1909.

To all whom it may concern: I

Be it known that I, Ronniir Vl Scorr, a citizen of the United States, residing in Leeds Point, Atlantic county, New Jersey,

have invented. certain Ribbed Knitted Fabrics, lowing is a specification. My invention consists of a ribbed web knitted in a novel way and possessing certain characteristics which clearly distinguish it'froni an ordinary ribbed web, one of such characteristics being that although the web may be light in weight and present the appearance of being knitted very slack, it ess sesses features of stability and resiliency not possessed by an ordinary slack-knitted ribbed web, another characteristic being a mesh construction which iinprovesthe sanitary qualities of the web and still another characteristic being the facility with which the Web can be provided on one face with predominating yarn of one material and on the other face with predominating yarn or another material.

In the a companying drawings-Figure 1 Improvements in of which the folknitted web made'in accordance with my invention; Fig. 2 is a longitudinal sectional View of the essential parts of a circular multi-feed knitting machine constructed for the production of ribbed web in accordance with my invention; Fig. 3 is. a View of two sets of the calns of the cylinder cam ring of the machine displayed in a flat plane; Fig. 4 is a bottom View of part of the dial cain ring of the machine illustrating two sets of the cams with which such ring is equipped; Fig. 5 is a View of a composite cam intended for use in the cylinder care ring of a single feed machine; Fig. 6 is a View ot a composite cam with which the dial cam ring of such single fcedmachine may be provlded, and Fig. 7 is a View similar to Fig. 1, but illustrating another form oi ribbed web embody ing certain features of my invention.

The distinguishing characteristic of my improved Web shown in Fig. 1 is that it sents, both in the needle wales and courses,

alternations of large and sinallstitches, each course which has stitches m in the of one face having smaller stitches 3 in-the wales of the other face, the disposition of the large and small stitches being reversed in successive conrses. This result is attained by the use of long and short draft cams in the respective cain carriers, the relation of the cams being reversed at successive yarn feeds, thus in a machinehaving the needles contained in cylinder and. dial, the cylinder cam ring" or the machine may. at one feed, have the long draft cam and the dial cain the short draft cam, and, at a succeeding feed, the' cylinder earn ring may l are the short draft cam and the dial cam ring the long draft cam.

in Fig. 20f the drawing, 1 represents the needle cylinder of the machine which is grooved for the reception and guidance of the needles and is suitably secured to the fixed base or bed plate of the machine. Surrounding the needle cylinder is a cylindrical cam ring 3 upon whose inner face are mounted the cares for imparting reciprocating movement to the cylinder needles, said cam ring being secured to a rotatable ring 2 to which power may he applied in any of the usual. ways. l

The needle dial fl: is mounted on a central stem or spindle 5 and is held stationary with the needle cylinder 1 either by means of engaging lugs on said cylinder and dial, such for instance Fig. 2, or in any other convenient way, and above the dial is located the dial camring 9 upon whose under face are mounted the cams whereby reciprocating movement is imparled to the needles which are radially guided in the grooved upper face of thedial, said dial cam ring being caused to rotate with the c lindcr cam rin in an ordinal llhile I have selected for the purpose of iliustraung my invention, a machine of that type in which the needle cylinder and dial are stationary andcoiiperate with a rotating cylinder cam ring and a rotating dial cam ring, it should be understood that my inventien equally applicable to that type of.

machine in which the cylinder cain ring and dial cam ring are the stations]: 1 elements and the needle cylinder and dial rotate, or the invention is applicable to machines ham ing straight i'lecdle beds cam carriers.

lfloth the cylinder cam ring and the dial cam. ring of the machine shown in Fig.2 are provided with earns i'or projecting their respective needles to the clearing point, that and reciprocating as shown at 6 and 7- in to say to the point at which the stitch already formed upon the needle is slipped back of the latch, and with long and short retracting or draft cams. Botlrdraft cams retract the needles to the knocking-over point, that is to say to the point where the l stitch previously formed upon the needle is slipped from the end of the latch and passed over the hook of the needle in order to engage the new loop of yarn d own by the lat;- tcr. The short draft cams may impart no further retracting movement to the needles, or they may retract them to a slight extent beyond the ln'iocking-over point, depending upon the desired length of the small stitches 3 the long draft cams retracting the needles to such an extent beyond the knocking-over point as may be necessary to draw the larger stitches w.

in Fig. of the drawing, the projecting cams of the cylinder cam ring are represented at it) and the long and short draft cams at. 11. and ll respectively, and in Fig. lthe projecting cams of the dial cam ring are represented at 12 and the long and short draft cams at .13 and 13, respectively. The long draft cams are preferably such as are known as primary draft cams, which are 'comparatively short and present a relatively abrupt angle, and the short draft cams are, preferably, such as are termed' secondary cams, which are longer, are curved and present a lesser angle than the primary cams. The relation of the primary and secondary cams to each other is indicated by the lines a and t) and the purpose of this construction is to delay the draft on the secondary needles until the primary needles have completed their draft, the yarn which is being drawn from the yarn guide by the primary needles being looped over the shanks of the intervening secondary needles and these loops being drawn through the stitches upon said secondary needles after the draft of the stitches I upon the adjoining primary needles has been completed. In the absence of this provision, the knitting yarn would, in the tinegage machines now employed, be trapped by the closing latches of the needles and its forward or feeding movement would thereby be restricted to such an extent as to cause it to break under the strain. In machines of relatively coarse gage, however, my invention may be practiced even although the needles of the two sets draw their stitches simultaneously.

In a multi-feed machine, I can practice my invention by alternating the long and short draft cams in the cylinder and dial cam rings of the machine as shown, and in a single feed machine, the same result may be attained by the use of composite cams in the cylinder and dial cam rings, such for instance as represented, respectively, in Figs. 5 and 6, each cam comprising a long draft or'primary member 11 or 13' and a short draft or secondary member 11 or 13 each adapted to act upon the needle butts, the long draft or primary member of the cam being movably mounted on the cam ring so that it can be moved into operative position in knitting one course and out of 0p erative position in order to permit the short draft or secondary member to act in knitting a succeeding course. buch composite cams can also be used on the cam bars of a straight rib knitting machine, whether single or multiple feed, so that a cam which acts as a primary cam on one reciprocation of the cam bar can act as a secondary cam on the reverse reciprocation.

A machine for producing my improved fabric forms the subject of my application, hjcrial No. dikifidilt), tiled September 18, 1908, and. the composite cams above referred to form the sub ect of my application, Serial A' o. 450,362, filed October 0th, i908.

in my improved web the eyelet holes or meshes formed by the large stitches are in Zigzag relation to one another, and this peculiar disposition of the meshes imparts a characteristic appearance to the web, while the fact that both faces of the web are composed in great part of the larger stitches improves the ventilating and sanitary properties of a garment made from such web. in most cases the large stitches of one face of the web will be of somewhat greater amplitude-than those of the other face, as shown in Fig. l. in the commercial web the smaller stitches will. usually be of such size in respect to the larger stitches that the latter will, in great measure, constitute the visibleface of the web, and they can be drawn so long or from such tine yarn as to impart to the web an appearance of slack knitting, while at the same time the alternation of these slack stitches with the smaller or closer stitches in each face of the web will impart to said web characteristics of stability and resiliency not possessed by an ordinaryv ribbed web having slack or loosely knitted stitches throughout, and I am therefore enabledto produce, without sacrifice of such stability or resiliency, a lighter web than usual, the lesser weight of the yarn tending to economical production. This same feature of construction also enables me to produce a web having one face composed mainly of one material and the other face composed mainly of another material, for instance, if one yarn feed supplies cotton yarn and the next feed supplies Woolen or Worsted yarn the large and dominating stitches of one face of the web will be of cotton and those of the other face of "wool or worsted, thus attaining, in an cllicient way, results which are now but imperfectly attained by reso 1 *tin s, to the operation known as platmg.

ltlt) Although l have shown my invention as embodied in what is known as a one-and-one rib web, it will be evident that it is applicable as well to the. knitting of webs having other types of ribs and although l have shown change from large to small stitches in every other course, the same length of stitch may prevail tlnroughout two or more successsive courses, if desired, without departing from the essential characteristics of my invention, thus in Fig. 7, .l' have. illustrated the application ot my invention to a threeandthree rib having large stitches in two successive courses, alternating with smaller stitches in the next two courses, the disposition of the stitches being reversed in successive ales.

I claim 1. A ribbed knitted web having both in the courses and wales, stitches o't relatively large size altcrnatin with stitches of smaller Li 7 D size.

1ft ribbed knitted web having wales with alternating large and small stitches, and also having, in one and the same course, stitches of relatively large size alternating with stitches of smaller size.

A ribbed knitted web having in wales of each face alternating large and small stitches, and also having, in one and the same course, stitches of relatively large size alternating with stitches of smaller size.

4-. A ribbed knitted web having, in. one

and the same course, stitches of relatively large size alternating with stitches oi smaller size, and having the disposition of the stitches reversed in successive. courses.

' an ribbed knitted web having, in one and the same course, on each face of the web, relatively large stitches alternating with shorter stitches, and havingthe disposition of stitches reversed in successive courses.

(9. A ribbed knitted web having in one and the same course on each face of the web, stitches of relatively large size alternating with stitches of smaller size, the large stitches on one face of the web being of greater amplitude than the large stitches on the other face of the web.

7. A ribbed knitted web, having in one and the same course on each face of the web,

stitches of relatively large size alternating with stitches of smaller size, and. having the disposition of the stitches reversed in successive courses, the large stitches on one face of the web being of greater amplitude. than the large stitches on the other -face of the web.

8. A ribbed knitted web having stitches of relatively large size alternating with stitches of smaller size in single courses, and, in single courses alternating therewith, a rc verse disposition of long and short stitches.

9. A ribbed knitted web having on each face of the web stitches of relatively large size alternating with stitches o't snriller size in single courses. and, in single courses alternating therewith, a lQX'tlSO disposition of long and short stitches, the large stitches on one face of the. web being of: greater amplitudethan the large stitches on the other face ot the web. 7

10. A ribbed knitted web having stitches of relatively large size alternating with stitches of smaller size in' single wales, and in single wales alternating therewith, a reverse disposition of the long and short stitches.

H. A ribbed knitted web having stitches of relatively large size alternating with stitches of smaller size in single courses and single wales, and in single courses and single wales alternating therewith, a reverse disposition of the large and small stitches.

In testimony whereof, l have signed, my name to this specification, in the presence ot two subscribing witnesses.

\Vitnesses:

lilAHlL'lON l). TURNER, KATE A. BnAnLn.

tltl 

